Ruling on discount cards

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Check below answers in case you are looking for other related questions:
Exchanging torn bank notes for half of their value
Should he issue papers for someone to show that he owns neglected land that belongs to the state?

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Related Answers:
Can he avail himself of help from social security when he is one of Ahl al-Bayt?
Transferring money via a riba-based bank or via an individual in return for a fee
Buying alcohol for fuel
Exchanging torn bank notes for half of their value
Should he issue papers for someone to show that he owns neglected land that belongs to the state?

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